Determination method for frequency converting air-conditioner liquid reservoir capacity and refrigerant charging amount

A method of determining a liquid reservoir, used in refrigerators, refrigeration components, refrigeration and liquefaction, etc.

Inactive Publication Date: 2008-11-19
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problem of determining the capacity and charging amount of the accumulator of the frequency conversion mult

Method used

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  • Determination method for frequency converting air-conditioner liquid reservoir capacity and refrigerant charging amount

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Embodiment Construction

[0018] As shown in Figure 1, the frequency conversion multi-connected air conditioning system consists of a compressor 1, an outdoor heat exchanger 2, an outdoor electronic expansion valve 3, a liquid reservoir 4, a liquid sight mirror 5, an indoor electronic expansion valve 6a / 6b / 6c, and an indoor heat exchanger. Heater 7a / 7b / 7c, four-way reversing valve, gas-liquid separator, etc.

[0019] In the present invention, the highest allowable liquid level indicator mirror HL and the lowest liquid level indicator mirror LL are arranged on the liquid reservoir 4 .

[0020] The invention can be applied to the stages of design, installation and maintenance of the frequency conversion multi-connected air conditioner system.

[0021] Concrete steps of the present invention are:

[0022] (1) Choose a liquid reservoir with a large enough volume, set a liquid level sight glass LL at a position 10mm~20mm higher than the liquid outlet pipe, and set a liquid level sight glass HL at a positio...

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Abstract

The invention relates to a method for determining the capacity of a liquid reservoir and the injecting amount of refrigerant of an inverter air conditioner, comprising the following steps of: 1. arranging a liquid level viewing mirror; 2. vacuumizing a refrigeration system and injecting the refrigerant; 3. starting the refrigeration system; 4. running an air conditioner system; 5. adjusting the frequency of a compressor. The method determines the injecting amount of the refrigerant of the system according to the lowest allowable liquid level of the liquid reservoir in the lowest frequency, determines the capacity of the liquid reservoir according to the highest allowable liquid level of the liquid reservoir in the highest frequency, and is suitable for an inverter (variable volume) air conditioner system.

Description

technical field [0001] The invention relates to a refrigerant charging method for a variable-frequency air-conditioning system, in particular to a method for determining the capacity of the liquid reservoir and the amount of refrigerant charging for a frequency-variable (variable capacity) multi-connected air-conditioning system with a high-pressure liquid reservoir. Background technique [0002] At present, when designing an inverter air-conditioning system, the capacity of the liquid receiver and the amount of refrigerant charge are determined through a large number of experiments and reference experience. This method requires relatively high experience and consumes a lot of resources and precious time. . Especially when installing and maintaining the air conditioning system on site, the amount of remaining refrigerant in the system cannot be accurately determined, and it can only be evacuated and refilled according to the charging amount specified in the design; however, ...

Claims

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Application Information

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IPC IPC(8): F25B45/00
Inventor 陶宏陶乐仁王金锋
Owner UNIV OF SHANGHAI FOR SCI & TECH
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